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arm64: tegra: Add PEX DPD states as pinctrl properties

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Add PEX deep power down states as pinctrl properties to set in PCIe driver.
In Tegra210, BIAS pads are not in power down mode when clamps are applied.
To set the pads in DPD, pass the PEX DPD states as pinctrl properties to
PCIe driver.

Signed-off-by: Manikanta Maddireddy <mmaddireddy@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Manikanta Maddireddy 2019-06-18 23:32:02 +05:30 committed by Thierry Reding
parent 9a182db457
commit 871be845df
1 changed files with 19 additions and 0 deletions
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19
arch/arm64/boot/dts/nvidia/tegra210.dtsi
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@ -48,6 +48,11 @@ pcie@1003000 {
<&tegra_car 72>,
<&tegra_car 74>;
reset-names = "pex", "afi", "pcie_x";
pinctrl-names = "default", "idle";
pinctrl-0 = <&pex_dpd_disable>;
pinctrl-1 = <&pex_dpd_enable>;
status = "disabled";
pci@1,0 {
@ -848,6 +853,20 @@ sdmmc3_1v8: sdmmc3-1v8 {
pins = "sdmmc3";
power-source = <TEGRA_IO_PAD_VOLTAGE_1V8>;
};
pex_dpd_disable: pex_en {
pex-dpd-disable {
pins = "pex-bias", "pex-clk1", "pex-clk2";
low-power-disable;
};
};
pex_dpd_enable: pex_dis {
pex-dpd-enable {
pins = "pex-bias", "pex-clk1", "pex-clk2";
low-power-enable;
};
};
};
fuse@7000f800 {